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BMR Calculator

Discover your Basal Metabolic Rate—the number of calories your body burns at rest. Essential for weight loss or muscle gain planning.

Calories
Burned at Rest
Accurate
Mifflin-St Jeor

Understanding Basal Metabolic Rate

Your Basal Metabolic Rate (BMR) is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions. Even if you stayed in bed all day, your body burns these calories to breathe, pump blood, and maintain body temperature.

The Mifflin-St Jeor Equation

We use the Mifflin-St Jeor equation, which is considered the most accurate method for estimating BMR in healthy individuals.

Men: (10 × weight) + (6.25 × height) - (5 × age) + 5
Women: (10 × weight) + (6.25 × height) - (5 × age) - 161

Weight in kg, Height in cm, Age in years.

Frequently Asked Questions

Is BMR the same as TDEE?

No. BMR is calories at complete rest. TDEE (Total Daily Energy Expenditure) adds your physical activity calories to your BMR.

Does BMR decrease with age?

Yes, as muscle mass tends to decrease with age, your metabolic rate typically slows down.